Checking for duplicate keys with Doctrine 2

Question

Is there an easy way to check for duplicate keys with Doctrine 2 before doing a flush?

Answer 1

You can catch the UniqueConstraintViolationException as such:

use Doctrine\DBAL\Exception\UniqueConstraintViolationException;

// ...

try {
   // ...
   $em->flush();
}
catch (UniqueConstraintViolationException $e) {
    // ....
}